Recent content by srabate

of course! I have no idea how I didn't see that. Thanks!

Hi all I am trying to go through the Griffiths Intro to QM book and I'm afraid I'm already stumped! He determines the momentum operator by beginning with the following equation: <x>=\int_{-\infty}^\infty {x|\psi(x)|^2} He takes the time derivative and manipulates the integral: (I'm...

If I'm interpreting the problem correctly, I believe you just have to find the compression of the spring when all of the kinetic energy of the blue cart is put into the compression of the spring. As you said.. after the collision: The velocity of the red cart is 0 m/s The velocity of the...

Use the equivalent resistance formulas and then Ohm's Law For two resistors in series R_{eq} = R_{1} + R_{2} For two resistors in parallel \frac{1}{R_{eq}} = \frac{1}{R_{1}} + \frac{1}{R_{2}} or two resistors in parallel simplified R_{eq} = \frac{R_{1}R_{2}}{R_{1}+R_{2}}} Hope this helps!